Design for estate is a sample of what's to come (9)
I believe the answer is:
foretaste
'a sample of what's to come' is the definition.
I can't tell whether this defines the answer.
'design for estate' is the wordplay.
'design' indicates anagramming the letters.
'for'+'estate'='forestate'
'forestate' anagrammed gives 'FORETASTE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for foretaste that I've seen before include "Sample of something to come" , "Brief experience of what is to come" , "Sample of something that lies ahead" , "trailer" , "Early experience" .)